Color video signal processing circuits

Details Color video signal processing circuits Color video signal processing circuits

1977-06-20

1978-06-20

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 578, H04N 902

Patent

active

040965139

ABSTRACT:
Luminance signals, subject to high frequency pre-emphasis, are applied to a first double-ended signal clipping circuit prior to combination with chrominance signals (in the form of modulated color subcarrier waves) to form a composite color video signal. The composite signal is fed to a second double-ended signal clipping circuit having clipping levels beyond those of the luminance signal clipper. The output of the second clipping circuit serves as the modulating signal input for a picture carrier frequency modulator.

REFERENCES:
patent: 3911476 (1975-10-01), Keizer
patent: 3969756 (1976-07-01), Palmer et al.

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